# SDR ASMF201503004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2015
- Submitted: March 4, 2015
- Operation: Air carrier
- Aircraft: [N851AM](https://openairdocs.org/aircraft/N851AM), registered now
- Make and model: Boeing 737752
- Aircraft serial: 29363
- Aircraft time: 36,373 hours, 18,884 cycles
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: Heat Exchanger
- Part number: 118411934
- Part serial: YY082937K
- Condition: Leaking
- Location: Right
- Part time: 34,053 hours, 18,002 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: K
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF201503004

## Discrepancy

AIRCRAFT RETURNED TO PLATFORM DUE TO DURING RT ENG START, AN OIL LEAK WAS DETECTED.  PERFORMED REVISION, DETECTING OIL LEAK IN THE OIL & FUEL HEAT EXCHANGER DRAIN.  THE RT HEAT EXCHANGER WAS REPLACED IAW AMM 79-21-02, TESTED CORRECT.

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